Anthony Sinclair Shannon, 38, was arrested Monday night and charged with felony theft of property valued at $2,500 to less than $30,000 for the heist of Miss Helen, a horn shark at the San Antonio Aquarium on Saturday, according to the Bexar County Sheriff's Office and other local authorities.

Anthony Shannon.Bexar County Sheriff\'s Office

Shannon was released on a $10,000 bond Tuesday morning, according to the sheriff's office.

The 16-inch long female shark was snatched on the last day of "Shark Week," the Discovery Channel's annual week-long programming dedicated to the species.

Security video released Monday shows the three thieves walking through the aquarium while pushing a baby carriage. They then snagged the horn shark from an interactive "touch pool" while an attendant was busy assisting other visitors, according to the aquarium.

The sharknappers then slipped into a filter room and emptied out a beach bucket, where they placed Miss Helen and then transferred her into the stroller and "hurried up the stairs and out to the parking lot" before driving away, the aquarium said.

Leon Valley Police Chief Joseph Salvaggio told NBC News Tuesday that all three persons of interest were questioned Monday night and confessed to their involvement. Shannon is allegedly the one who pulled Miss Helen from her tank, he said. A separate male suspect provided a written confession and has not been arrested or charged while a female suspect was set to give a written confession as well, he added. Those two suspects are Shannon's neighbor and relative, he said.

Salvaggio said he could not substantiate claims that Shannon was trying to sell the shark and instead seemed to just be an avid collector.

He told reporters Monday night at the aquarium that police tracked down the getaway vehicle and found a house nearby where they were able to recover Miss Helen.

"When we got into the garage and into the house, it looked like almost a mock-up of here," he said, referring to the aquarium. "He had a lot of different marine animals in the home, very much knew what he was doing."

"We don't think he was planning on selling it. He didn't say that, but from looking at the other animals there, more than likely it was something that he wanted," he said. "He had had one of these in the past, don't know, I think the animal had died sometime in the past."

Gavin Naylor, Director of the Florida Program for Shark Research at the Florida Museum of Natural History, said horn sharks are "incredibly interesting" and "pretty hardy little animals" that can live in shallow water.

"They're not high performance sharks but as a result they can tolerate low oxygen levels fairly well," he said, adding they could likely be out of water for 10 to 15 minutes and still recover.

He said that while stealing sharks is obviously wrong, horn sharks and other similar species exist as pets "all over the world" through marine hobbyists.

"There's also a huge trade in these beautiful, fresh water stingrays from Brazil," he said.

"The pet trade has a lot of very dedicated, passionate people, some of them do things legally and some do not," he said. "They're pretty committed people."

Naylor said such types of sharks could cost $1,000 or $2,000 each and said he would imagine there were "several thousand horn shark pets around the world," although it was impossible to know just how many.

"When this happened all the staff was very heartbroken simply because we did not think that she would even survive that in itself," she told reporters. "I'm really proud of her and I'm so overjoyed to have her back."